
基于matlab汽車道路模型研究論文
武漢工業學院 畢業設計(論文) 2011屆 畢業設計(論文)題目:基于MATLAB的汽車道路模型研究 院 (系) 機械工程學院 專業名稱 機械設計制造及其自動化 學生姓名 瞿先明 學生學号 070301133 指導教師 胡志剛 侯傳亮 2011年6月9日I 摘要 汽車虛拟樣機技術,是計算機技術應用到機械行業中來以後産生的 一種新的汽車振動性能實驗方法。但虛拟樣機技術實驗的結果,強烈地 依賴于所建立的仿真模型的真實程度。目前大多數汽車振動分析的激振 信号,采用随機信号或變頻正弦激勵信号,雖然激振頻帶能包含汽車固 有頻率,但激振信号并不能代替實際路面振動情況。 行駛平順性是汽車的重要性能之一,它不僅影響了乘客的乘坐舒适 性,而且也是防止司機疲勞,避免造成車禍的重要因素,是以行駛平順 性曰益受到人們的重視。但是傳統的研究分析方法已無法滿足現代汽車 的研究要求,虛拟樣機技術作為一項新的技術,已經開始用到各個領域。 本文比較詳細的介紹了行駛平順性的概念、評價名額和評價方法以 及目前該領域的研究現狀。介紹了MATLAB/SIMULINK軟體的主要子產品和 軟體的理論基礎,為後面的模組化和仿真分析奠定了基礎。并在MATLAB平 台下,利用濾波白噪聲生成法重構時域路面不平度仿真模型,并考慮行 駛速度對汽車振動的影響。 關鍵詞:随機路面 MATLAB ADAMS 道路模型II Abstract The virtual prototype technology is a computer technology that applied to mechanical industry, Which after a new cars produced vibration perance test s. But the results of the virtual prototype technology experiment, intra operative dependent strongly on the simulation model, that is established by the true extent. Most current auto vibration analysis vibration signal, using random signals or frequency conversion. Although the excitation frequency band can include the automobile inherent frequency, but excitation letter Number cannot replace real pavement vibration circumstances. The tiding comfort is one of the most important perances of vehicle.It call influence not only the feeling of passengers,but also the prevention of crash by avoiding making the driver tired. So it is paid more and more emphasis gradually.The traditional research can’t not match the modern requirement of vehicle’s research and development.So Virtual Prototyping Technology has been applied in many fields as a new industrial technology. This dissertation introduces the concept, uating indicator, uation and the present status of vehicle tiding comfort in detail. Then the key modules and the theoretical basis of MATLAB are introduced, which will be used in the following chapters.These theories are the base of subsequent model building and simulation analysis.In MATLAB flat, we use filtering White noise generating , that can reconstruct road roughness simulation model of time domain, and consider the road Speed on the influence of auto vibration. Key words: random road MATLAB ADAMS road modeIII 目錄 摘要.I ABSTRACT .II 1 緒論 1 1.1 引言 1 1.2 汽車行駛平順性研究的意義 2 1.3 汽車行駛平順性研究的發展概況